/home/rRBl6K/prog.fs(9,9): warning FS0058: Possible incorrect indentation: this token is offside of context started at position (6:12). Try indenting this token further or using standard formatting conventions.
/home/rRBl6K/prog.fs(2,18): error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
/home/rRBl6K/prog.fs(3,25): error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
/home/rRBl6K/prog.fs(9,40): error FS0039: The value or constructor 'firstChars' is not defined
/home/rRBl6K/prog.fs(9,80): error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.